TC1240 Datasheet | TelCom Semiconductor

FEATURES s s s s s s s s s Space Saving 6-Pin SOT-23A Package >99% Typical Voltage Conversion Efficiency Voltage Doubling Operates from +2.5V to +4.0V Low Output Resistance (17Ω Typical) Only Two External Capacitors Required Consumes 180µA (Typical) in Active Mode Power-Saving Shutdown Mode (1µA Maximum) Fully pliant with 1.8V Logic Sytems GENERAL DESCRIPTION The TC1240 is a doubling CMOS charge-pump voltage converter in a small 6-Pin SOT-23A package. TC1240 doubles an input voltage which can range from +2.5V to +4.0V. Conversion efficiency is typically >99%. Internal oscillator frequency is 160k Hz for the TC1240. The TC1240 has an active high shutdown which limits the current consumption of the device to less than 1µA. External ponent requirement is only two capacitors for standard voltage doubler applications. All other circuitry, including control, oscillator, power MOSFETs are integrated on-chip. Typical supply current is 180µA and the device is available in a 6-Pin SOT-23A surface mount package. APPLICATIONS s s s s s Cellular Phones Pagers PDAs, Portable Dataloggers Battery-Powered Devices Handheld Instruments ORDERING INFORMATION Part Number TC1240ECH Package 6-Pin SOT-23A Temp. Range - 40°C to +85°C TYPICAL OPERATING CIRCUIT PIN CONFIGURATION Positive Voltage Doubler 6-Pin SOT-23A C+ C 1 C- SHDN TC1240 ON OFF INPUT VIN 1 6 C+ GND 2 TC1240ECH OUT GND C2 2 x INPUT C- SHDN NOTE: - 6-Pin SOT-23A is equivalent to EIAJ SC-74 TC1240-1 7/7/00 Tel Semiconductor reserves the right to make changes in the circuitry and 1 specifications of its devices. Positive Doubling Charge Pump with Shutdown in SOT Package TC1240 ABSOLUTE MAXIMUM RATINGS- Input Voltage (VIN to GND) +4.5V, - 0.3V Output Voltage (OUT to GND) +9.0V, VIN - 0.3V Current at OUT Pin 50 m A Short-Circuit Duration - OUT to GND Indefinite Operating Temperature Range...